73344540 has 24 divisors (see below), whose sum is σ = 205364880. Its totient is φ = 19558528.

The previous prime is 73344529. The next prime is 73344569. The reversal of 73344540 is 4544337.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 73344498 and 73344507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611145 + ... + 611264.

It is an arithmetic number, because the mean of its divisors is an integer number (8556870).

Almost surely, 2^73344540 is an apocalyptic number.

It is an amenable number.

73344540 is an abundant number, since it is smaller than the sum of its proper divisors (132020340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73344540 is a wasteful number, since it uses less digits than its factorization.

73344540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222421 (or 1222419 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 73344540 is about 8564.1426891429. The cubic root of 73344540 is about 418.5903991171.

Adding to 73344540 its reverse (4544337), we get a palindrome (77888877).

The spelling of 73344540 in words is "seventy-three million, three hundred forty-four thousand, five hundred forty".